Vehicle muffler



FIG. 1 is a perspective view of a vehicle muffler showing my new design;

FIG. 2 is a plan view thereof; and,

FIG. 3 is a perspective view thereof shown on the rear end of a vehicle.

The broken line showings of the boundaries in the figures and of the remainder of the vehicle rear end in FIG. 3 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a vehicle muffler, as shown and described. 